Duracast NH4 | Duracast DC17
Duracast® DC17 Chrome White Iron
Duracast DC17 is a white cast iron commonly used in mining applications that experience severe wear. This product combines the abrasion resistance of alloyed white iron with the ability to cast custom shapes to form a unique wear solution for varied applications.
The Duracast DC17 castings are produced by Bradken’s in-house foundries. An automated moulding machine allows for high volume, low-cost manufacturing. Custom shapes can be cast to solve complex wear problems and to allow for attachment methods such as fish-tail liner bolts. A heat treatment process is used to maximise its wear resistance.
The Duracast DC17 cast material belongs to the high chromium abrasion-resistant cast iron alloys designated by Australian Standard – AS 2027–2007. The major alloying elements, chromium, carbon and molybdenum, give this material its superior abrasion resistant properties. A typical chemical composition is given below:
The microstructure of Duracast DC17 is crucial in providing superior wear performance. The heat treatment cycle transforms the softer as-cast microstructure into hard, wear resistant material. This microstructure consists of a network of interconnected eutectic M7C3 carbides in a martensitic matrix.
|Bulk Hardness||600–750 HV50|
|Carbide Hardness||≥1200 HV0.5|
|Volume Fraction of Carbides||25%–30%|